Global analysis of emperor penguin populations ...

Like many polar animals, emperor penguin populations are challenging to monitor because of the species' life history and remoteness. Consequently, it has been difficult to establish its global status, a subject important to resolve as polar environments change. To advance our understanding of e...

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Bibliographic Details
Main Authors: LaRue, Michelle, Iles, David, Labrousse, Sara, Fretwell, Peter, Ortega, David, Devane, Eileen, Horstmann, Isabella, Viollat, Lise, Foster-Dyer, Rose, Le Bohec, Céline, Zitterbart, Daniel, Houstin, Aymeric, Richter, Sebastian, Winterl, Alexander, Wienecke, Barbara, Salas, Leo, Nixon, Monique, Barbraud, Christophe, Kooyman, Gerald, Ponganis, Paul, Ainley, David, Trathan, Phil, Jenouvrier, Stéphanie
Format: Article in Journal/Newspaper
Language:unknown
Published: Zenodo 2024
Subjects:
Emperor penguin
Aptenodytes forsteri
Bayesian method
high-resolution satellite imagery
Population modeling
Emperor penguins
Institut Polaire Français
Online Access:https://dx.doi.org/10.5281/zenodo.10573922
https://zenodo.org/doi/10.5281/zenodo.10573922
Description
Summary:Like many polar animals, emperor penguin populations are challenging to monitor because of the species' life history and remoteness. Consequently, it has been difficult to establish its global status, a subject important to resolve as polar environments change. To advance our understanding of emperor penguins, we combined remote sensing, validation surveys, and using Bayesian modeling we estimated a comprehensive population trajectory over a recent 10-year period, encompassing the entirety of the species' range. Reported as indices of abundance, our study indicates with 81% probability that the global population of adult emperor penguins declined between 2009 and 2018, with a posterior median decrease of 9.6% (95% credible interval (CI) -26.4% to +9.4%). The global population trend was -1.3% per year over this period (95% CI = -3.3% to +1.0%) and declines likely occurred in four of eight fast ice regions, irrespective of habitat conditions. Thus far, explanations have yet to be identified regarding trends, ... : Funding provided by: National Science FoundationCrossref Funder Registry ID: https://ror.org/021nxhr62Award Number: 1748898 Funding provided by: National Science FoundationCrossref Funder Registry ID: https://ror.org/021nxhr62Award Number: 1744794 Funding provided by: National Science FoundationCrossref Funder Registry ID: https://ror.org/021nxhr62Award Number: 2046437 Funding provided by: National Aeronautics and Space AdministrationCrossref Funder Registry ID: https://ror.org/027ka1x80Award Number: 80NSSC20K1289 Funding provided by: World Wide Fund for NatureCrossref Funder Registry ID: https://ror.org/052y0z870Award Number: GB095701 Funding provided by: Deutsche ForschungsgemeinschaftCrossref Funder Registry ID: https://ror.org/018mejw64Award Number: ZI1525/3-1 Funding provided by: Deutsche ForschungsgemeinschaftCrossref Funder Registry ID: https://ror.org/018mejw64Award Number: ZI1525/7-1 Funding provided by: Institut Polaire Français Paul Émile VictorCrossref Funder Registry ID: ...

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